에어커튼형 레인지후드의 슬롯 토출 각도 변화와 배기 효율Effect of Slot Discharge-Angle Change on Exhaust Efficiency of Range Hood System with Air Curtain
- Other Titles
- Effect of Slot Discharge-Angle Change on Exhaust Efficiency of Range Hood System with Air Curtain
- Authors
- 성순경
- Issue Date
- 2015
- Publisher
- 대한설비공학회
- Keywords
- Range hood(레인지후드); Air curtain(에어커튼); Capturing efficiency(포집효율); Slot(슬롯); Discharge angle(토출각)
- Citation
- 설비공학 논문집, v.27, no.9, pp.468 - 474
- Journal Title
- 설비공학 논문집
- Volume
- 27
- Number
- 9
- Start Page
- 468
- End Page
- 474
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/11788
- DOI
- 10.6110/KJACR.2015.27.9.468
- ISSN
- 1229-6422
- Abstract
- When oil is used for cooking in detached or apartment houses, large amounts of oil-mist, smoke, and particulate substances are generated and dispersed into the indoor-air environment. These pollutants diffuse into the surroundings and spread their odor while rising fast at a high temperature due to the heat energy from the gas range. Although the exhaust gas is discharged from the exhaust hood, which is installed on the top of a gas range to remove the diffuse pollutants, the exhaust conditions can vary greatly because they depend on the shape of the exhaust hood and the discharge rate. In this paper, the air that is required for the gas-exhaustion process is supplied by an air curtain that surrounds the kitchen hood, and the pollutant-capturing efficiency varies depending on the angle of the discharge grills; the pollutant-capturing efficiency was studied using a numerical-analysis method. The results indicate that the pollutant-capturing efficiency is not significantly changed by a change of the discharge-grill angle at a low air-discharge rate; however, at a high air-discharge rate, the efficiency value increases with an increase of the discharge-grill angle, whereby the best value occurs at 30 degrees and the efficiency decreases above this angle. Below 30 degrees, the effect of the discharge rate on the capturing efficiency is more than that of the discharge-grill angle.
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